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3703468e36
* stdio-common/_i18n_number.h (_i18n_number_rewrite): Take additional parameter for end of buffer. If temporary copy is too large use malloc. * stdio-common/vfprintf.c: Adjust for _i18n_number_rewrite interface change. * stdio-common/printf_fp.c (__printf_fp): Likewise.. Account for string rewrite when allocating buffer.
112 lines
3.2 KiB
C
112 lines
3.2 KiB
C
/* Copyright (C) 2000, 2004, 2008 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@gnu.org>, 2000.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <wchar.h>
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#include <wctype.h>
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#include "../locale/outdigits.h"
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#include "../locale/outdigitswc.h"
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static CHAR_T *
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_i18n_number_rewrite (CHAR_T *w, CHAR_T *rear_ptr, CHAR_T *end)
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{
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#ifdef COMPILE_WPRINTF
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# define decimal NULL
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# define thousands NULL
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#else
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char decimal[MB_LEN_MAX];
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char thousands[MB_LEN_MAX];
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#endif
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/* "to_outpunct" is a map from ASCII decimal point and thousands-sep
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to their equivalent in locale. This is defined for locales which
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use extra decimal point and thousands-sep. */
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wctrans_t map = __wctrans ("to_outpunct");
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wint_t wdecimal = __towctrans (L'.', map);
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wint_t wthousands = __towctrans (L',', map);
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#ifndef COMPILE_WPRINTF
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if (__builtin_expect (map != NULL, 0))
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{
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mbstate_t state;
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memset (&state, '\0', sizeof (state));
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if (__wcrtomb (decimal, wdecimal, &state) == (size_t) -1)
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memcpy (decimal, ".", 2);
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memset (&state, '\0', sizeof (state));
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if (__wcrtomb (thousands, wthousands, &state) == (size_t) -1)
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memcpy (thousands, ",", 2);
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}
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#endif
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/* Copy existing string so that nothing gets overwritten. */
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CHAR_T *src;
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bool use_alloca = __libc_use_alloca ((rear_ptr - w) * sizeof (CHAR_T));
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if (__builtin_expect (use_alloca, true))
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src = (CHAR_T *) alloca ((rear_ptr - w) * sizeof (CHAR_T));
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else
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{
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src = (CHAR_T *) malloc ((rear_ptr - w) * sizeof (CHAR_T));
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if (src == NULL)
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/* If we cannot allocate the memory don't rewrite the string.
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It is better than nothing. */
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return w;
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}
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CHAR_T *s = (CHAR_T *) __mempcpy (src, w,
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(rear_ptr - w) * sizeof (CHAR_T));
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w = end;
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/* Process all characters in the string. */
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while (--s >= src)
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{
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if (*s >= '0' && *s <= '9')
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{
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if (sizeof (CHAR_T) == 1)
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w = (CHAR_T *) outdigit_value ((char *) w, *s - '0');
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else
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*--w = (CHAR_T) outdigitwc_value (*s - '0');
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}
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else if (__builtin_expect (map == NULL, 1) || (*s != '.' && *s != ','))
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*--w = *s;
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else
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{
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if (sizeof (CHAR_T) == 1)
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{
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const char *outpunct = *s == '.' ? decimal : thousands;
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size_t dlen = strlen (outpunct);
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w -= dlen;
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while (dlen-- > 0)
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w[dlen] = outpunct[dlen];
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}
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else
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*--w = *s == '.' ? (CHAR_T) wdecimal : (CHAR_T) wthousands;
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}
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}
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if (! use_alloca)
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free (src);
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return w;
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}
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